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Diesel injector testers; Diesel oil emission testers; Electrochemical gas sensors; Gas sensors; Water temperature gauges; Air/fuel ratio gauges; Boost gauges; Vacuum gauges; Exhaust gas temperature gauges; Circuit testing instruments; Gas testing instruments; Bore testing instruments; Instruments for testing metals; Testing apparatus and instruments; Material testing instruments and machines; Plastic testing machines; Endurance testing machines; Concrete testing machines; Lumber testing machines; Textile testing machines; Cement testing machines; Electrical and electronic test apparatus and instruments; Metal strength testing machines; Metal compression testing machines; Metal hardness testing machines; Testing and quality control devices; Testing devices for electronic parts; Testing apparatus for checking electronic devices; Testing apparatus for checking optical devices; Measuring instruments; Radiation-measuring instruments; Gasometers [measuring instruments]; Electricity measuring instruments; Rulers [measuring instruments]; Rules [measuring instruments]; Vacuum measuring instruments; Weight measuring instruments; Jigs [measuring instruments]; Electric measuring instruments; Compasses [measuring instruments]; Speed measuring instruments; Protractors [measuring instruments]; Resistance measuring instruments; Logs [measuring instruments]; Tool measuring instruments; Coordinate measuring instruments; Temperature measuring instruments; Radioactivity measuring instruments; Height measuring instruments; Automatic measuring instruments; Wind (Instruments for measuring -); Instruments for measuring pressure; Instruments for measuring length; Instruments for measuring angles; Instruments for measuring speed; Instruments for measuring velocities; Measuring apparatus and instruments; Connected bracelets [measuring instruments]; Measuring devices; Sensors for measuring instruments; Electrical tape jigs [measuring instruments]; Distance and dimension measuring instruments; Astrometric measuring apparatus and instruments; Instruments for measuring milk quality parameters; Electric measuring devices; Measuring devices, electric; Instruments for measuring levels of fluids; Screw-thread measuring machines and instruments; Luminescence measuring devices; Wire diameter measuring devices; Time measuring instruments (not including clocks and watches); Air pollution measuring devices; Level measuring machines [for surveying]; Measuring, detecting, monitoring and controlling devices; Measuring and control devices for air conditioning technology; Flatness testers; Transistor testers; Earth testers; Speedometer testers; Battery testers; Circuit testers; Microhardness testers; Voltage testers; Continuity testers; Insulation testers; Power testers; Tension testers; Textile testers; Torsion testers; Ductility testers; Lumber testers; Antifreeze testers; Current testers; Mains testers (Electric -); Glow plug testers; Electrical circuit testers; Electric circuit testers; Brake fluid testers; Optical disc testers; Testers for concrete; Smoke alarm testers; Audio cable testers; Testers for axle clearance; Vacuum tube characteristic testers